Abstract Should schools teach about homosexuality and heterosexuality, and if so how? This paper outlines arguments both in favour of, and against, such teaching and concludes that, on balance, schools of 11?16/18?years?olds should teach about sexual orientation provided certain specified conditions are met. The author then defends the notion that to teach about sexual orientation is to teach about a controversial issue, but notes that few, if any, of the published approaches to teaching in this area treat it as such. He goes on to examine both the specific aims and possible approaches to teaching about homosexuality and heterosexuality. Good teaching in this area should enable 14?16?year?old students to become better informed about people's sexual orientations; it should help them better to understand each other's positions; and it should allow them to clarify their own values and attitudes